NWS San Juan says:
Posted by ricksterpr on 7/7/2013, 5:16 pm
ASCAT SATELLITE NICELY CAPTURED A NICE TIGHT CIRCULATION AROUND
THE DEVELOPING LOW THIS MORNING (1325Z) AND THE LOCATION OF THE
ITCZ TOWARDS THE SOUTHWEST. LOW CURRENTLY NEAR 9.5/42.5W MOVING
WEST 20 KT OR MORE AND WILL INCREASE SPEED SOME TONIGHT/MON. SO
FAR IT IS EMBEDDED IN THE ITCZ AND ESSENTIALLY SHIELDED FROM THE
HUGE MASS OF SAHARAN AIR DIRECTLY NORTH OF IT. ONCE IT LEAVES THE
ITCZ IT MUST ENTRAIN AT LEAST SOME OF THAT AIR WHICH IS A STRONG
NEGATIVE FACTOR IN ITS DEVELOPMENT...SO IS THE EXPECTED FAST PACE.
BUT IT ALREADY HAS A GOOD CIRCULATION AND CONVECTION NEAR THE
CENTER AND SHORT TERM DEVELOPMENT SEEMS A GOOD BET. THIS SYSTEM
WILL LIKELY PASS SOUTH OF PR/USVI LATE TUE INTO TUE NIGHT AND IS
TOO EARLY TO NARROW DOWN WHERE (OR IF) STRONG WINDS WILL OCCUR HERE.

&&

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Mid Atlantic, extremely low latitude, yellow circle - Chris in Tampa, 7/5/2013, 10:02 pm
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